检验医学 ›› 2024, Vol. 39 ›› Issue (2): 176-180.DOI: 10.3969/j.issn.1673-8640.2024.02.014

• 论著 • 上一篇    下一篇

基于CLSI指南EP09-A3比对2套化学发光免疫分析系统血清TT3测定结果

陈永伟1, 王静1, 杨晓龙2(), 胡芳宇2, 林芳2   

  1. 1.江苏省原子医学研究所附属江原医院医学检验科,江苏 无锡 214063
    2.希森美康生物科技(无锡)有限公司开发中心实验室,江苏 无锡 214028
  • 收稿日期:2023-03-23 修回日期:2023-08-01 出版日期:2024-02-28 发布日期:2024-03-26
  • 通讯作者: 杨晓龙
  • 作者简介:杨晓龙,E-mail:yaldingyang@126.com
    陈永伟,男,1973年生,学士,主管检验技师,主要从事免疫学检验工作。

Applicability of CLSI EP09-A3 in 2-method comparison determining serum total triiodothyronine

CHEN Yongwei1, WANG Jing1, YANG Xiaolong2(), HU Fangyu2, LIN Fang2   

  1. 1. Department of Clinical Laboratory,Jiangyuan Hospital Affiliated to Jiangsu Institute of Nuclear Medicine,Wuxi 214063,Jiangsu,China
    2. Development Central Laboratory,Sysmex Wuxi Co. Ltd.,Wuxi 214028,Jiangsu,China
  • Received:2023-03-23 Revised:2023-08-01 Online:2024-02-28 Published:2024-03-26
  • Contact: YANG Xiaolong

摘要:

目的 基于美国临床实验室标准化协会(CLSI)指南EP09-A3探讨2套化学发光免疫分析系统血清总三碘甲状腺原氨酸(TT3)测定结果的可比性。方法 根据EP09-A3指南要求,使用2个品牌化学发光免疫分析系统(分别命名为系统一和系统二)分别测定111例血清样本TT3水平。通过广义极端学生化偏差(ESD)法检验离群值,选用EP09-A3指南列举的5种回归模型分析2套系统TT3检测结果,并计算医学决定水平处的偏移。结果 散点图目测和ESD法检验均未发现离群值。2套系统TT3检测结果的5种回归分析结果显示,一般线性回归、加权最小二乘法回归、Deming回归、Passing-Bablock回归分析在TT3医学决定水平处(0.75 和1.91 ng·mL-1)的偏移均<可接受范围[允许总误差(TEa)±12.5%],偏移的95%可信区间(CI)结果类型解读为可接受的A型和B型,加权Deming回归分析得到的偏移的95%CI部分超出可接受范围,结果类型解读为C型。结论 EP09-A3指南适用于2套系统检测TT3的方法学比对和偏移评估,且该指南更新的离群值判断方法、回归分类分析法和对应的解读分型方式更为科学、合理。

关键词: EP09-A3, 总三碘甲状腺原氨酸, 方法学比对, 医学决定水平, 偏移

Abstract:

Objective To evaluate the applicability of the Clinical and Laboratory Standards Institute(CLSI) guideline EP09-A3 in 2 chemiluminescence immunoassay systems determining serum total triiodothyronine(TT3). Methods Totally,111 serum samples were determined for TT3 and analyzed by System 1 and System 2. Analytical performance and method comparison were performed according to EP09-A3. Outliers were computed by extreme studentized deviate(ESD),and 5 classified regression techniques were performed to evaluate the 2 methods and interpret biases. Results No outliers were determined in this study by visual judgement or ESD. The biases with 95% confidence interval(CI) of medical decision points(0.75 and 1.91 ng·mL-1) were within the allowable total error(TEa)(±12.5%) by applying general linear regression,weighted least square regression,Deming regression and Passing-Bablock regression,and the outcomes were interpreted as type A or B which were acceptable. While the outcome of weighted Deming regression was interpreted as type C which may be judged as unacceptable. Conclusions The results of 2 systems determining TT3 are comparable,and the analysis methods and interpretation of EP09-A3 are more scientific and reasonable.

Key words: EP09-A3, Total triiodothyronine, Method comparison, Medical decision point, Bias

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